Words Starting With "IS" - Word Finder

The following list of words starting with "is" can be used to play Scrabble®, Words with Friends®, Wordle®, and more word games to feed your word game addiction.

We pull words from the dictionaries associated with each of these games. We also show the number of points you score when using each word in Scrabble® and the words in each section are sorted by Scrabble® score. Get helpful hints or use our cheat dictionary to beat your friends. The words below are grouped by the number of letters in the word so you can quickly search through word lengths.

Table of Contents

15 Letter Words

We found 4 fifteen-letter words starting with "is".

  • isoimmunization
    28
  • isoperimetrical
    21
  • ismaticalnesses
    19
  • isoimmunisation
    19

14 Letter Words

We found 15 fourteen-letter words starting with "is".

  • isocarboxazids
    35
  • isoalloxazines
    30
  • isomorphically
    26
  • isomerizations
    25
  • isodimorphisms
    24
  • isochromosomes
    23
  • isogeothermics
    22
  • isopiestically
    21
  • isentropically
    21
  • isogeothermals
    20
  • isodiametrical
    19
  • isoperimetries
    18
  • isoproterenols
    16
  • isomerisations
    16
  • isoagglutinins
    16

13 Letter Words

We found 33 thirteen-letter words starting with "is".

  • isocarboxazid
    34
  • isoalloxazine
    29
  • isochronizing
    28
  • isomerization
    24
  • isodimorphism
    23
  • isochromosome
    22
  • isogeothermic
    21
  • isodimorphous
    21
  • isochronously
    21
  • isotropically
    20
  • isosmotically
    20
  • isometrically
    20
  • isocheimenals
    20
  • isospondylous
    19
  • isogeothermal
    19
  • isochronising
    19
  • isobarometric
    19
  • isostatically
    18
  • isoteniscopes
    17
  • isoperimeters
    17
  • isoelectronic
    17
  • ismaticalness
    17
  • isosthenurias
    16
  • isoantibodies
    16
  • isotonicities
    15
  • isoproterenol
    15
  • isoprenalines
    15
  • isomerisation
    15
  • isolationisms
    15
  • isolabilities
    15
  • isoagglutinin
    15
  • isotretinoins
    13
  • isolationists
    13

12 Letter Words

We found 32 twelve-letter words starting with "is".

  • isoenzymatic
    28
  • isochronized
    27
  • isochronizes
    26
  • isodimorphic
    22
  • isoxsuprines
    21
  • isomorphisms
    21
  • isochromatic
    21
  • isothermally
    20
  • isochronally
    20
  • isotopically
    19
  • isoperimetry
    19
  • isochronisms
    19
  • isocheimenal
    19
  • isogeotherms
    18
  • isodiapheres
    18
  • isochronised
    18
  • isotonically
    17
  • isomagnetics
    17
  • isodiametric
    17
  • isochronises
    17
  • isobutylenes
    17
  • isoteniscope
    16
  • isoperimeter
    16
  • isometropias
    16
  • isosthenuria
    15
  • isoantigenic
    15
  • isostemonous
    14
  • isoprenaline
    14
  • isolationism
    14
  • isobilateral
    14
  • isotretinoin
    12
  • isolationist
    12

11 Letter Words

We found 45 eleven-letter words starting with "is".

  • isochronize
    25
  • isorhythmic
    24
  • isomerizing
    23
  • isopachytes
    21
  • isoniazides
    21
  • isoxsuprine
    20
  • isomorphism
    20
  • isodynamics
    19
  • isomorphous
    18
  • isochronism
    18
  • isocheimals
    18
  • ischuretics
    18
  • isogeotherm
    17
  • isoflavones
    17
  • isodiaphere
    17
  • isocyanides
    17
  • isoantibody
    17
  • isotonicity
    16
  • isothermals
    16
  • isopluvials
    16
  • isomagnetic
    16
  • isolecithal
    16
  • isolability
    16
  • isografting
    16
  • isocyanates
    16
  • isochronous
    16
  • isochronise
    16
  • isobutylene
    16
  • isotropisms
    15
  • isoseismics
    15
  • isometropia
    15
  • isometrical
    15
  • isoelectric
    15
  • isapostolic
    15
  • isallobaric
    15
  • isoprenoids
    14
  • isomerising
    14
  • isoseismals
    13
  • isopolities
    13
  • isoleucines
    13
  • isoaminiles
    13
  • isabellines
    13
  • isoantigens
    12
  • isinglasses
    12
  • isonitriles
    11

10 Letter Words

We found 81 ten-letter words starting with "is". Here are the first 50. Click "More" for more 10-letter words. You can also click/tap on the word to get the definition.

  • isoenzymic
    26
  • isoenzymes
    24
  • isomerized
    22
  • isomerizes
    21
  • isopachyte
    20
  • isoniazids
    20
  • isoniazide
    20
  • isopycnics
    19
  • isomorphic
    19
  • isocheimic
    19
  • isochasmic
    19
  • isodynamic
    18
  • isopycnals
    17
  • isopropyls
    17
  • isoplethic
    17
  • isocrymals
    17
  • isochimals
    17
  • isocheimal
    17
  • ischuretic
    17
  • ischaemias
    17
  • ispaghulas
    16
  • isokinetic
    16
  • isohyetals
    16
  • isoflavone
    16
  • isocyanide
    16
  • isothermal
    15
  • isopluvial
    15
  • isografted
    15
  • isogametic
    15
  • isocyanate
    15
  • isochroous
    15
  • isochrones
    15
  • isochronal
    15
  • isotropism
    14
  • isoseismic
    14
  • isopiestic
    14
  • isometrics
    14
  • isomerisms
    14
  • isokontans
    14
  • isocracies
    14
  • isoclinics
    14
  • isocaloric
    14
  • isobarisms
    14
  • isentropic
    14
  • iseikonias
    14
  • isotherals
    13
  • isoprenoid
    13
  • isomerised
    13
  • isoglottic
    13
  • isoglossic
    13

9 Letter Words

We found 101 nine-letter words starting with "is". Here are the first 50. Click "More" for more 9-letter words. You can also click/tap on the word to get the definition.

  • isoenzyme
    23
  • isomerize
    20
  • isoniazid
    19
  • isopycnic
    18
  • isohydric
    18
  • isocyclic
    18
  • ischaemic
    18
  • ischiadic
    17
  • isopycnal
    16
  • isopropyl
    16
  • isomorphs
    16
  • isocyanic
    16
  • isocrymes
    16
  • isocrymal
    16
  • isochoric
    16
  • isochimes
    16
  • isochimal
    16
  • isocheims
    16
  • isochasms
    16
  • isobathic
    16
  • ischiatic
    16
  • ischemias
    16
  • ischaemia
    16
  • ispaghula
    15
  • isohyetal
    15
  • isographs
    15
  • iseikonic
    15
  • isthmuses
    14
  • isthmians
    14
  • isotherms
    14
  • isopolity
    14
  • isopleths
    14
  • isophotes
    14
  • isophotal
    14
  • isophones
    14
  • isochrons
    14
  • isochrone
    14
  • isochores
    14
  • isobutyls
    14
  • ischurias
    14
  • isarithms
    14
  • isotropic
    13
  • isotactic
    13
  • isosmotic
    13
  • isometric
    13
  • isomerism
    13
  • isokontan
    13
  • isografts
    13
  • isocratic
    13
  • isoclinic
    13

8 Letter Words

We found 90 eight-letter words starting with "is". Here are the first 50. Click "More" for more 8-letter words. You can also click/tap on the word to get the definition.

  • isozymic
    24
  • isozymes
    22
  • ischemic
    17
  • isotypic
    15
  • isopachs
    15
  • isomorph
    15
  • isolexes
    15
  • isocryme
    15
  • isocracy
    15
  • isochime
    15
  • isocheim
    15
  • isochasm
    15
  • ischemia
    15
  • isthmoid
    14
  • isohyets
    14
  • isograph
    14
  • isthmian
    13
  • issuably
    13
  • isotypes
    13
  • isotropy
    13
  • isotherm
    13
  • isotachs
    13
  • isostacy
    13
  • isospory
    13
  • isopleth
    13
  • isophote
    13
  • isophone
    13
  • isometry
    13
  • isogamic
    13
  • isoforms
    13
  • isodomum
    13
  • isochron
    13
  • isochors
    13
  • isochore
    13
  • isobutyl
    13
  • isobaths
    13
  • isoamyls
    13
  • ischuria
    13
  • isarithm
    13
  • isotopic
    12
  • isonomic
    12
  • isomeric
    12
  • isokonts
    12
  • isogrivs
    12
  • isograft
    12
  • isobaric
    12
  • isagogic
    12
  • isothere
    11
  • isostasy
    11
  • isopodan
    11

7 Letter Words

We found 57 seven-letter words starting with "is". Here are the first 50. Click "More" for more 7-letter words. You can also click/tap on the word to get the definition.

  • isozyme
    21
  • isthmic
    14
  • isopach
    14
  • ischium
    14
  • isohyet
    13
  • isogamy
    13
  • isthmus
    12
  • isotype
    12
  • isotopy
    12
  • isotach
    12
  • isonomy
    12
  • isoform
    12
  • isochor
    12
  • isobath
    12
  • isoamyl
    12
  • ischial
    12
  • isokont
    11
  • isogriv
    11
  • isogony
    11
  • isogeny
    11
  • ismatic
    11
  • isopods
    10
  • isohels
    10
  • isogram
    10
  • isodoma
    10
  • isodica
    10
  • isotope
    9
  • isospin
    9
  • isonome
    9
  • isomers
    9
  • isomere
    9
  • isobase
    9
  • isobars
    9
  • isobare
    9
  • islemen
    9
  • isleman
    9
  • isagoge
    9
  • isabels
    9
  • issuing
    8
  • isologs
    8
  • isolead
    8
  • isogons
    8
  • isogone
    8
  • isodose
    8
  • isodont
    8
  • isleted
    8
  • islands
    8
  • istanas
    7
  • issuers
    7
  • issuant
    7

6 Letter Words

We found 20 six-letter words starting with "is".

  • isolex
    13
  • isthmi
    11
  • ischia
    11
  • isopod
    9
  • isohel
    9
  • isomer
    8
  • isobar
    8
  • isabel
    8
  • issued
    7
  • isolog
    7
  • isogon
    7
  • isling
    7
  • island
    7
  • istles
    6
  • istana
    6
  • issues
    6
  • issuer
    6
  • isseis
    6
  • islets
    6
  • isatin
    6

5 Letter Words

We found 9 five-letter words starting with "is".

  • ishes
    8
  • isbas
    7
  • isled
    6
  • istle
    5
  • issue
    5
  • issei
    5
  • isnae
    5
  • islet
    5
  • isles
    5

4 Letter Words

We found 6 four-letter words starting with "is".

  • isba
    6
  • isms
    6
  • isle
    4
  • isna
    4
  • isos
    4
  • isit
    4

3 Letter Words

We found 3 three-letter words starting with "is".

  • ish
    6
  • ism
    5
  • iso
    3

2 Letter Words

We found 1 two-letter words starting with "is".

  • is
    2

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